TPS65110 Datasheet, PDF (1/15 Pages) Texas Instruments – LTPS LCD BIAS POWER SUPPLY TRIPLE CHARGE PUMP

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TPS65110
TPS65111
SLVS495 − SEPTEMBER 2003
LTPSĆLCD BIAS POWER SUPPLY, TRIPLE CHARGE PUMP
FEATURES
D Complete LTPS-LCD Bias Solution
D Triple Output Charge Pump Providing
V_CC at 16 mA, V_DD at 2 mA, V_SS at 1 mA
D 2.4 V to 5.5 V Input Voltage Range
D Fixed Output Voltages of 3.3 V, 7.5 V, −2.7 V
or 5.0 V, 9.0 V, −3.0 V
D 50 µA Typical Quiescent Current
D Less Than 1 µA Shutdown Current
D Ultra-Low Ripple (V_CC = 5 mV,
Typical at 5 mA)
D Autonomous Boost for V_CC Supply
D 1.5% Accuracy on Fixed VCC Output Voltage
D Sequential Power Control
D 24-Pin QFN Package (4 x 4)
APPLICATIONS
D Small Form LTPS−LCD Displays
D PDAs, Pocket PCs
D Smart Phones
APPLICATION CIRCUIT FOR TPS65111
0.1 µF
VIN
2.4 V to 5.5 V
4.7 µF
0.22 µF
0.22 µF
0.22 µF
CSP CSN
VIN
VSS
TPS65111
CCP1
CDP1
CCN1
CCP2
CDN1
CDP2
CCN2
CCP3
CDN2
CDP3
CCN3
CDN3
VCC
5 V, 16 mA
VCC
2.2 µF
VDD
VSS
−3 V, 1 mA
2.2 µF
0.1 µF
0.1 µF
0.1 µF
1 µF
VDD
9 V, 2 mA
DESCRIPTION
The TPS65110/11 is a very compact power supply
solution providing the three voltages required by many
LTPS LCD displays.
All three regulated outputs are generated using a charge
pump topology.
The VCC charge pump provides precise, high efficiency,
and very low ripple dc/dc conversion for the LCD analog
power. The VCC boost ratio (x1.0, x1.33, x1.5, and x2.0)
is automatically set based on input and output voltage
conditions. The VCC output assures 16 mA of current by
using three 0.22-µF flying capacitors. If the required output
current is smaller, smaller capacitors can be applied.
The VDD charge pump provides a higher positive voltage,
and the VSS charge pump provides the negative output
voltage. Power up/down sequences are internally set and
are secured even in cases of sudden and abnormal VIN
drop.
One of the most significant features of the TPS65110/11
is the ultra-low output voltage ripple, as the VCC charge
pump achieves 5-mV output ripple voltage.
AVAILABLE OUTPUT VOLTAGE OPTIONS
PART NUMBER VCC
TPS65110RGE 3.3 V
VDD
7.5 V
VSS VDD BOOST
−2.7 V
X3
TPS65111RGE 5.0 V 9.0 V −3.0 V
X2
(1) _{The RGE package is available in tape and reel.}
Add R suffix (RGER) to order quantities of 3000 parts.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright  2003, Texas Instruments Incorporated